phat dump 

Slang term for a large defecation, usually a extinction level event. Clean up after this event usually involves incineration of all personal belongings, and change of identity.

Ryan:"I'm going to take a phat dump"
Everyone on earth: "prepares for apocalypse"

phat dump by notbigbrad September 21, 2021

Phat Dumper 

A girl with a nice ass

That chick has a phat dumper.

Phat Dumper by wondab January 17, 2012